«Researchers took a liquid metal alloy of gallium and indium at room temperature and made (...) a 3D figure. (...) The researchers have spent years developing a method of 3D-printing liquid metal at room temperature. (...) The process uses a syringe needle to dollop tiny spheres of metal together. A thin oxide skin holds it all together and prevents the printed structures from just collapsing into metal blobs. (...) The extruded wires are both flexible and stretchable, opening up possibilities for 3D-printing connections between electronic components (...) and even applications like headphone wires where flexibility and the ability to self-heal could improve durability.»Source: CNET.